Biologists, instrument developers, and computational scientists have for the first time measured the density of a relatively inscrutable, highly condensed form of chromosomal material (heterochromatin) that appears in the cells of human beings and othe...

Biologists, instrument developers, and computational scientists have for the first time measured the density of a relatively inscrutable, highly condensed form of chromosomal material (heterochromatin) that appears in the cells of human beings and other eukaryotes.